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Solaris Interview Questions & Answers - Learning Mode
COOLINTERVIEW.COM OPERATING SYSTEMS INTERVIEW QUESTIONS SOLARIS INTERVIEW QUESTIONS QUESTIONS & ANSWERS - LEARNING MODE

Solaris Interview Questions & Answers - Learning Mode

Solaris is a Unix operating system originally developed by Sun Microsystems. It superseded their earlier SunOS in 1993. Oracle Solaris, so named as of 2010, has been owned by Oracle Corporation since the Sun acquisition by Oracle in January 2010. Solaris is the computer operating system that Sun Microsystems provides for its family of Scalable Processor Architecture-based processors as well as for Intel-based processors. Sun has historically dominated the large UNIX workstation market.

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Solaris Interview Questions & Answers - Learning Mode
Try Solaris Interview Questions & Answers - Exam Mode
Question: What are the main differences between solaris 10 and 9?

Answer: The main difference in solaris 9 & solaris 10 is "SMF(Solaris Management Facility)".
In solaris 9, if any service goes down then we should restart all services this is the disadvantage.
But in solaris 10,if any service goes down then that particular service we can select and enable it instead of restarting all services. Source: CoolInterview.com
Question: what file do you modify to change the mail alises (give full path)?

Answer: /etc/mail/sendmail.cf Source: CoolInterview.com
Question: What command enables a printer?

Answer: enable Source: CoolInterview.com
Question: What would a XIR signal do to a server and why would it be used?





Answer: XIR signal used by reset command in solaris.

reset(1M) allows you to reset one or more domains in one of two ways: reset the hardware to a clean state or send an externally initiated reset (XIR) signal. The default is to reset the hardware to a clean state. You will receive an error if the virtual keyswitch is in the secure position. An optional confirmation prompt is given by default. Refer to Chapter 6 in the System Management Services (SMS) 1.2 Administrator Guide for the Sun Fire 15K/ Source: CoolInterview.com
Question: What is sticky bit in Solaris?

Answer: If a directory is writable and has sticky bit is set, files within directory removed or renamed only if one or more following is true:

- The user owns the file

- The user owns the directory

- The file writable by the User

- The user is "root"

chmod 1777 project_dir

The sticky bit is displayed as the letter t in the execute field for 'others'.
________________________________________
Sticky Bit is a permission bit that protects the files wit Source: CoolInterview.com
Question: The hardware-level user interface that you see before the operating system has been started is called:



Answer: open boot Source: CoolInterview.com
Question: Search for a sample string in particular files?

Answer: - grep .Debug. *.confHere grep uses the string .Debug. to search in all files with extension..conf. under current directory. Source: CoolInterview.com
Question: How to configure mail server in sun solaris?

Answer: 1. Install the sendmail recent package..

2. in /etc/mail/sendmail.cf file configure for localhost,mail server and domain name.

3. Restart the sendmail service...

that's it .. getback to me if having any more doubt. Source: CoolInterview.com
Question: Explain about the command ls?

Answer: Ls command gives a way to the main directory and also gives access permissions for files in Solaris. It displays and prints user and group ownerships, file access permissions, filename and files size and creation date. Source: CoolInterview.com
Question: What file controls system wide password aging?



Answer: /etc/shadow
Source: CoolInterview.com
Question: Where are the templates stored that are copied into the users home directories for their personal customizations?

Answer: /etc/skel Source: CoolInterview.com
Question: How can i disable STOP+A utility on SUN machines, which brings system into OK> prompt?

Answer: in /etc/system set abort_enable=0 will disable STOP-A ________________________________________There are several ways to disable "STOP-A"
(1)Edit the /etc/default/kbd file
KEYBOARD_ABORT=disable
(2)Use the "kbd -a disable" command
(3) Edit /etc/system file
set abort_enable = 0 Source: CoolInterview.com
Question: The NVRAM is also soldered to the main logic board or motherboard.

Answer: It is a pluggable IC with yellow sticker on it, can be easily replaceble when it goes wrong. Source: CoolInterview.com
Question: What is after the VTOC on the root filesystem?






Answer: A solaris disk has an area called volume table of contents(VTOC) that stores information about disk structure and organization.
Source: CoolInterview.com
Question: What are the different ways to execute profiles?

Answer: Profiles can be executed in many different ways some of them are
1) Pfexec executes a single command in profile
2) With some restrictions pfsh and pfcsh can be executed.
3) By directly logging into the account using su. Source: CoolInterview.com
Question: What would a XIR signal do to a server and why would it be used?


Answer: XIR signal used by reset command in solaris.

reset (1M) allows you to reset one or more domains in one of two ways: reset the hardware to a clean state or send an externally initiated reset (XIR) signal. The default is to reset the hardware to a clean state. You will receive an error if the virtual keyswitch is in the secure position. An optional confirmation prompt is given by default. Refer to Chapter 6 in the System Management Services (SMS) 1.2 Administrator Guide for the Sun Fire 15K Source: CoolInterview.com
Question: What is sticky bit?



Answer: If a directory is writable and has sticky bit is set, files within directory removed or renamed only if one or more following is true:

- The user owns the file

- The user owns the directory

- The file writable by the User

- The user is "root"

chmod 1777 project_dir

The sticky bit is displayed as the letter t in the execute field for 'others'.
Source: CoolInterview.com
Question: The hardware-level user interface that you see before the operating system has been started is called:

Answer: open boot Source: CoolInterview.com
Question: Explain about kadmin command?

Answer: Local kerbeors services can be managed by administering policies, keytabs and principles by managing the kadmin command. Kadmin.local is used to master KDC and it does not require any authentication. On the server login information is passed through a secured server. It checks the principle name by the value of the user environment variable. Source: CoolInterview.com
Question: What is "Piping" solaris?

Answer: piping:- sending the output of a command to the input of another is called piping.

some examples are:

$cal | wc

will output total line's,word's and character's

$cal | wc | wc

will output total line's,word's and character's

A unix pipe provides a one-way flow of data.


For example, if a Unix users issues the command
$who | sort |lpr
then the Unix shell would create three processes with two pipes between them:

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